A. the air. All the other choices don't make sense.
Answer:
UNESCO: United Nations Educational, Scientific and Cultural Organization. ... UNESCO's mission is to contribute to the building of a culture of peace, the eradication of poverty, sustainable development and intercultural dialogue through education, the sciences, culture, communication and information.
1:3, you simplify 4 divided by 4 and 12 divided by 4
Pangaea means the continents once fit together like a puzzle to form one big continent